Check event_name and set environment

.github/workflows/github-actions-demo.yml

@@ -1,10 +1,17 @@
 name: GitHub Actions Demo
 run-name: ${{ github.actor }} is testing out GitHub Actions 🚀
-on: [push, pull_request]
+on:
+  push:
+    branches: ["main"]
+  pull_request:
+  release:
 jobs:
   Explore-GitHub-Actions:
     runs-on: ubuntu-latest
+    env:
+      Environment: ${{ github.event_name == 'release' && 'prod' || 'dev' }}
     steps:
+      - run: echo "We are targetting the '$Environment' environment."
       - run: echo "🎉 The job was automatically triggered by a ${{ github.event_name }} event."
       - run: echo "🐧 This job is now running on a ${{ runner.os }} server hosted by GitHub!"
       - run: echo "🔎 The name of your branch is ${{ github.ref }} and your repository is ${{ github.repository }}."